Once you’ve downloaded the MT5 app on your iPhone or iPad, follow these steps:
Launch the MT5 app on your iPhone or iPad.
Go to Settings.
Select "New Account."
In the Search field, enter ‘Tag Markets’ and choose ‘Tag Markets Ltd’.
The server is set to Demo by default. If you're accessing a live account, tap on the Server field and select “TagMarkets-Live”.
Enter your trading account number in the Login field, input your password, and tap Done at the bottom of the screen.